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astro-ph.GA2025
N-body simulations of galaxy bars generated by satellite collisions: effects of the impact geometry
Yufan Fane Zhou, Zhiyuan Li, Hui Li
Bars, a common and important structure in disk galaxies, can be induced by galaxy interactions. Although there have been some studies on bar formation in flybys or collisions, the…
astro-ph.GA2025
Ring or no ring -- Revisiting the Multiphase Nuclear Environment in M31
Zongnan Li, Zhao Su, Sumin Wang +9
Nuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 r…
astro-ph.EP2025
Prediction for close approaches with terrestrial planets of asteroids from the main belt
Yufan Fane Zhou, Zhiyuan Li, Hailiang Li +1
Potentially Hazardous Asteroids (PHAs), a special subset of Near-Earth Objects, are both dangerous and scientifically valuable. PHAs that truly undergo close approaches with the Ea…